Q: What engineering provisions does this 4-slot shelf offer regarding Flatpack2 module compatibility, CAN bus digital monitoring, and hot-swap expansion?

The subrack natively accommodates the entire Flatpack2 48V rectifier family (including 2000W standard, 3000W HE, and specialized HVDC industrial modules), supporting seamless blind-mate hot-swapping. Its backplane integrates an industrial CAN bus network engineered for plug-and-play communication with Smartpack2 or Smartpack S controllers. The system employs autonomous active digital load sharing with current imbalance < 5% across all 4 slots, facilitating N+1 or N+2 redundancy. Removal or failure of a module triggers microsecond-level load redistribution without introducing DC bus voltage transients.

Q: How does the Eltek 268035 handle harsh telecom and outdoor cabinet environments in terms of thermal limits, surge tolerance, and Low Voltage Disconnect (LVD)?

Rated at IP20, the shelf operates reliably across an extended temperature range from -40°C to +75°C (adapting to module-level derating curves at elevated temperatures). It features front-to-back forced cooling pathways and heavy-duty tinned copper busbars to control resistance and thermal rise under continuous 200A loads. The architecture supports external contactor drivers for dual-stage Low Voltage Disconnect (BLVD for battery deep-discharge protection and LLVD for non-critical load shedding). Certified to IEC 60950-1 and EN 300 386 EMC standards, it effectively withstands Class C industrial surges.

Question 1

What are the electrical input characteristics, DC output capabilities, and conversion efficiency metrics of the Eltek 268035 Flatpack2 4AC subrack?

Accepted Answer

The Eltek 268035 (ELTEK-SYS-FP2-4AC-HVDC) features a standard 19-inch subrack architecture engineered for a maximum system capacity of 200 A at a nominal -48 VDC output (adjustable from -43 to -57.6 VDC). It provides 4 dedicated, physically isolated AC input terminals supporting 85 to 300 VAC single-phase input or direct 180 to 300 VDC HVDC feeds per slot. When populated with 4 Flatpack2 HE (High Efficiency) rectifier modules, the system achieves a peak efficiency > 96.5%, a power factor (PF) ≥ 0.99, and THD < 5%, substantially decreasing thermal dissipation and operational power expenses (OPEX).

Question 2

What engineering provisions does this 4-slot shelf offer regarding Flatpack2 module compatibility, CAN bus digital monitoring, and hot-swap expansion?

Accepted Answer

The subrack natively accommodates the entire Flatpack2 48V rectifier family (including 2000W standard, 3000W HE, and specialized HVDC industrial modules), supporting seamless blind-mate hot-swapping. Its backplane integrates an industrial CAN bus network engineered for plug-and-play communication with Smartpack2 or Smartpack S controllers. The system employs autonomous active digital load sharing with current imbalance < 5% across all 4 slots, facilitating N+1 or N+2 redundancy. Removal or failure of a module triggers microsecond-level load redistribution without introducing DC bus voltage transients.

Question 3

How does the Eltek 268035 handle harsh telecom and outdoor cabinet environments in terms of thermal limits, surge tolerance, and Low Voltage Disconnect (LVD)?

Accepted Answer

Rated at IP20, the shelf operates reliably across an extended temperature range from -40°C to +75°C (adapting to module-level derating curves at elevated temperatures). It features front-to-back forced cooling pathways and heavy-duty tinned copper busbars to control resistance and thermal rise under continuous 200A loads. The architecture supports external contactor drivers for dual-stage Low Voltage Disconnect (BLVD for battery deep-discharge protection and LLVD for non-critical load shedding). Certified to IEC 60950-1 and EN 300 386 EMC standards, it effectively withstands Class C industrial surges.

Key specifications	Value
System Output Capacity	200 A
Nominal Output Voltage	-48 VDC
Output Voltage Range	-43 ~ -57.6 VDC
AC Input Voltage Range	85 ~ 300 VAC / supports direct high-voltage DC HVDC input
Rectifier Module Slots	4-slot Flatpack2 subrack with independent AC inputs
System Monitoring Controller	Smartpack2 / Smartpack S centralized control
System Comprehensive Efficiency	> 96.5% (HE high efficiency)
Ingress Protection (IP Rating)	IP20
Physical Dimensions Spec	88 × 482 × 380 mm (2U 19-inch)
Operating Temperature	-40°C to +75°C

Eltek 268035 Flatpack2 4AC 4-Slot Subrack DC Power System

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

Telecommunication central offices

Datacenter DC distribution shelves

Substation supervisory control power

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